2 2 2-trifluoroacetic acid density July 8, 2019 16 32 64 128 2 2 2-trifluoroacetic acid 2 2-difluoro-2-(fluorosulfonyl)acetic acid 2 2-difluoro-2-(triphenylphosphonio)acetate 2 2 2-trifluoroethyl acetate
